[PATCH v2 11/36] soc: fsl: cpm1: tsa: Introduce tsa_setup() and its CPM1 compatible version

Herve Codina
2024-08-08T07:11:49Z

Current code handles the CPM1 version of TSA. Setting up TSA consists in
handling SIMODE and SIGMR registers. These registers are CPM1 specific.

Setting up the QUICC Engine (QE) version of TSA is slightly different.

In order to prepare the support for QE version, clearly identify these
registers as CPM1 compatible and isolate their handling in a CPM1
specific function.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
drivers/soc/fsl/qe/tsa.c | 93 +++++++++++++++++++++++-----------------
1 file changed, 54 insertions(+), 39 deletions(-)

diff --git a/drivers/soc/fsl/qe/tsa.c b/drivers/soc/fsl/qe/tsa.c
index bf7354ebaca4..239b71187e07 100644
--- a/drivers/soc/fsl/qe/tsa.c
+++ b/drivers/soc/fsl/qe/tsa.c
@@ -32,14 +32,14 @@
#define TSA_CPM1_SIRAM_ENTRY_CSEL_SMC2 FIELD_PREP_CONST(TSA_CPM1_SIRAM_ENTRY_CSEL_MASK, 0x6)

/* SI mode register (32 bits) */
-#define TSA_SIMODE 0x00
-#define TSA_SIMODE_SMC2 BIT(31)
-#define TSA_SIMODE_SMC1 BIT(15)
-#define TSA_SIMODE_TDMA_MASK GENMASK(11, 0)
-#define TSA_SIMODE_TDMA(x) FIELD_PREP(TSA_SIMODE_TDMA_MASK, x)
-#define TSA_SIMODE_TDMB_MASK GENMASK(27, 16)
-#define TSA_SIMODE_TDMB(x) FIELD_PREP(TSA_SIMODE_TDMB_MASK, x)
-#define TSA_SIMODE_TDM_MASK GENMASK(11, 0)
+#define TSA_CPM1_SIMODE 0x00
+#define TSA_CPM1_SIMODE_SMC2 BIT(31)
+#define TSA_CPM1_SIMODE_SMC1 BIT(15)
+#define TSA_CPM1_SIMODE_TDMA_MASK GENMASK(11, 0)
+#define TSA_CPM1_SIMODE_TDMA(x) FIELD_PREP(TSA_CPM1_SIMODE_TDMA_MASK, x)
+#define TSA_CPM1_SIMODE_TDMB_MASK GENMASK(27, 16)
+#define TSA_CPM1_SIMODE_TDMB(x) FIELD_PREP(TSA_CPM1_SIMODE_TDMB_MASK, x)
+#define TSA_CPM1_SIMODE_TDM_MASK GENMASK(11, 0)
#define TSA_SIMODE_TDM_SDM_MASK GENMASK(11, 10)
#define TSA_SIMODE_TDM_SDM_NORM FIELD_PREP_CONST(TSA_SIMODE_TDM_SDM_MASK, 0x0)
#define TSA_SIMODE_TDM_SDM_ECHO FIELD_PREP_CONST(TSA_SIMODE_TDM_SDM_MASK, 0x1)
@@ -49,22 +49,22 @@
#define TSA_SIMODE_TDM_RFSD(x) FIELD_PREP(TSA_SIMODE_TDM_RFSD_MASK, x)
#define TSA_SIMODE_TDM_DSC BIT(7)
#define TSA_SIMODE_TDM_CRT BIT(6)
-#define TSA_SIMODE_TDM_STZ BIT(5)
+#define TSA_CPM1_SIMODE_TDM_STZ BIT(5)
#define TSA_SIMODE_TDM_CE BIT(4)
#define TSA_SIMODE_TDM_FE BIT(3)
#define TSA_SIMODE_TDM_GM BIT(2)
#define TSA_SIMODE_TDM_TFSD_MASK GENMASK(1, 0)
#define TSA_SIMODE_TDM_TFSD(x) FIELD_PREP(TSA_SIMODE_TDM_TFSD_MASK, x)

-/* SI global mode register (8 bits) */
-#define TSA_SIGMR 0x04
-#define TSA_SIGMR_ENB BIT(3)
-#define TSA_SIGMR_ENA BIT(2)
-#define TSA_SIGMR_RDM_MASK GENMASK(1, 0)
-#define TSA_SIGMR_RDM_STATIC_TDMA FIELD_PREP_CONST(TSA_SIGMR_RDM_MASK, 0x0)
-#define TSA_SIGMR_RDM_DYN_TDMA FIELD_PREP_CONST(TSA_SIGMR_RDM_MASK, 0x1)
-#define TSA_SIGMR_RDM_STATIC_TDMAB FIELD_PREP_CONST(TSA_SIGMR_RDM_MASK, 0x2)
-#define TSA_SIGMR_RDM_DYN_TDMAB FIELD_PREP_CONST(TSA_SIGMR_RDM_MASK, 0x3)
+/* CPM SI global mode register (8 bits) */
+#define TSA_CPM1_SIGMR 0x04
+#define TSA_CPM1_SIGMR_ENB BIT(3)
+#define TSA_CPM1_SIGMR_ENA BIT(2)
+#define TSA_CPM1_SIGMR_RDM_MASK GENMASK(1, 0)
+#define TSA_CPM1_SIGMR_RDM_STATIC_TDMA FIELD_PREP_CONST(TSA_CPM1_SIGMR_RDM_MASK, 0x0)
+#define TSA_CPM1_SIGMR_RDM_DYN_TDMA FIELD_PREP_CONST(TSA_CPM1_SIGMR_RDM_MASK, 0x1)
+#define TSA_CPM1_SIGMR_RDM_STATIC_TDMAB FIELD_PREP_CONST(TSA_CPM1_SIGMR_RDM_MASK, 0x2)
+#define TSA_CPM1_SIGMR_RDM_DYN_TDMAB FIELD_PREP_CONST(TSA_CPM1_SIGMR_RDM_MASK, 0x3)

/* SI clock route register (32 bits) */
#define TSA_SICR 0x0C
@@ -656,13 +656,45 @@ static void tsa_init_si_ram(struct tsa *tsa)
tsa_write32(tsa->si_ram + i, TSA_CPM1_SIRAM_ENTRY_LAST);
}

+static int tsa_cpm1_setup(struct tsa *tsa)
+{
+ u32 val;
+
+ /* Set SIMODE */
+ val = 0;
+ if (tsa->tdm[0].is_enable)
+ val |= TSA_CPM1_SIMODE_TDMA(tsa->tdm[0].simode_tdm);
+ if (tsa->tdm[1].is_enable)
+ val |= TSA_CPM1_SIMODE_TDMB(tsa->tdm[1].simode_tdm);
+
+ tsa_clrsetbits32(tsa->si_regs + TSA_CPM1_SIMODE,
+ TSA_CPM1_SIMODE_TDMA(TSA_CPM1_SIMODE_TDM_MASK) |
+ TSA_CPM1_SIMODE_TDMB(TSA_CPM1_SIMODE_TDM_MASK),
+ val);
+
+ /* Set SIGMR */
+ val = (tsa->tdms == BIT(TSA_TDMA)) ?
+ TSA_CPM1_SIGMR_RDM_STATIC_TDMA : TSA_CPM1_SIGMR_RDM_STATIC_TDMAB;
+ if (tsa->tdms & BIT(TSA_TDMA))
+ val |= TSA_CPM1_SIGMR_ENA;
+ if (tsa->tdms & BIT(TSA_TDMB))
+ val |= TSA_CPM1_SIGMR_ENB;
+ tsa_write8(tsa->si_regs + TSA_CPM1_SIGMR, val);
+
+ return 0;
+}
+
+static int tsa_setup(struct tsa *tsa)
+{
+ return tsa_cpm1_setup(tsa);
+}
+
static int tsa_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct resource *res;
struct tsa *tsa;
unsigned int i;
- u32 val;
int ret;

tsa = devm_kzalloc(&pdev->dev, sizeof(*tsa), GFP_KERNEL);
@@ -696,26 +728,9 @@ static int tsa_probe(struct platform_device *pdev)
if (ret)
return ret;

- /* Set SIMODE */
- val = 0;
- if (tsa->tdm[0].is_enable)
- val |= TSA_SIMODE_TDMA(tsa->tdm[0].simode_tdm);
- if (tsa->tdm[1].is_enable)
- val |= TSA_SIMODE_TDMB(tsa->tdm[1].simode_tdm);
-
- tsa_clrsetbits32(tsa->si_regs + TSA_SIMODE,
- TSA_SIMODE_TDMA(TSA_SIMODE_TDM_MASK) |
- TSA_SIMODE_TDMB(TSA_SIMODE_TDM_MASK),
- val);
-
- /* Set SIGMR */
- val = (tsa->tdms == BIT(TSA_TDMA)) ?
- TSA_SIGMR_RDM_STATIC_TDMA : TSA_SIGMR_RDM_STATIC_TDMAB;
- if (tsa->tdms & BIT(TSA_TDMA))
- val |= TSA_SIGMR_ENA;
- if (tsa->tdms & BIT(TSA_TDMB))
- val |= TSA_SIGMR_ENB;
- tsa_write8(tsa->si_regs + TSA_SIGMR, val);
+ ret = tsa_setup(tsa);
+ if (ret)
+ return ret;

platform_set_drvdata(pdev, tsa);

--
2.45.0